Stories by P. H. Cowell

The SciencesMarch 19, 1910

Halley's Comet as seen from the Earth

The Position of the Comet.

P. H. Cowell

The SciencesJune 16, 1906

Ancient Eclipses

P. H. Cowell

The SciencesAugust 3, 1901

Prof. Adams' Lectures on the Lunar Theory

P. H. Cowell